Does a charactistic of roxk is that each of the componet minerals retains its properties in the mixture?

It is true that a characteristic of rock is that each of the component minerals retains its properties in the mixture.

Explanation:

Rocks are composed of two or more minerals. A rock is any naturally occurring solid mass or aggregate of minerals or mineraloid matter.

These minerals have been

1) cemented together

2) squeezed and heated together, or

3) melted and cooled together.

One of the most common rock is granite. The four minerals that make up granite are feldspar, quartz, mica, and hornblende. Each of these minerals retain their property in a mixture form in a rock.

alchemy hadn't scientific methods of study, appeal to mysticism and fantasy, the knowledge of chemistry and physics were modest at that time.

alchemy was - but as new rules were discovered it either changed into chemistry or it became "unscientific".